165455164674 has 80 divisors (see below), whose sum is σ = 384385419000. Its totient is φ = 53130663936.

The previous prime is 165455164669. The next prime is 165455164723. The reversal of 165455164674 is 476461554561.

165455164674 is a `hidden beast` number, since 1 + 6 + 54 + 5 + 516 + 4 + 6 + 74 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 130151385225 + 35303779449 = 360765^2 + 187893^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 165455164674.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2070184 + ... + 2148620.

Almost surely, 2^165455164674 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165455164674, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192192709500).

165455164674 is an abundant number, since it is smaller than the sum of its proper divisors (218930254326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165455164674 is a wasteful number, since it uses less digits than its factorization.

165455164674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78929 (or 78920 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 54.

The spelling of 165455164674 in words is "one hundred sixty-five billion, four hundred fifty-five million, one hundred sixty-four thousand, six hundred seventy-four".